Newbie to django ninja rest api.helping to fix an issue.

django ninja rest api
#in model.py
class Channel(models.Model):

# id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=100, default='')
language = models.ForeignKey(Language, on_delete=models.CASCADE,default='en')
parent = models.ForeignKey("self", related_name='children',default=0,blank=True,null=True,on_delete=models.CASCADE)
image = models.ForeignKey(Image, related_name='channel_image', on_delete=models.CASCADE,default=0)
display_index = models.IntegerField(default=0)
release = models.BooleanField(default=False)

created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)

def _str_(self) -> str:
return self.name

#in Scehma.py
class ChannelSchema(ModelSchema):
class Config:
model = Channel
model_fields = ["id","name", "language", "parent","image","display_index","release","created_at","updated_at"]


#in api.py
@api.post("/channels/")
def channels(request,data:ChannelSchema):
qs = Channel.objects.create(**data.dict())
return {"post channels":"completed"+qs.name}

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
while I post /channels it would throw error

ValueError: Cannot assign "0": "Channel.language" must be a "Language" instance.

POST obj
{
"id": 0,
"name": "",
"language_id": 0,
"parent_id": 0,
"image_id": 0,
"display_index": 0,
"release": false,
"created_at": "2022-03-25T02:57:43.965Z",
"updated_at": "2022-03-25T02:57:43.965Z"
}

if I change the attrbute from language_id to language
Second error
{
"detail": [
{
"loc": [
"body",
"data",
"language_id"
],
"msg": "field required",
"type": "value_error.missing"
}
]
}